December 2002
Volume 43, Issue 13
Free
ARVO Annual Meeting Abstract  |   December 2002
Retinal Sensitivity at the Margin of Macular Holes
Author Affiliations & Notes
  • A Yoshida
    Ophthalmology Asahikawa Medical College Asahikawa Japan
  • S Ishiko
    Ophthalmology Asahikawa Medical College Asahikawa Japan
  • N Kitaya
    Ophthalmology Asahikawa Medical College Asahikawa Japan
  • J Takahashi
    Ophthalmology Asahikawa Medical College Asahikawa Japan
  • FJ Van de Velde
    Ophthalmology University Hospital Antwerp Belgium
  • CL Schepens
    Schepens Eye Research Institute Boston MA
  • Footnotes
    Commercial Relationships   A. Yoshida, None; S. Ishiko, None; N. Kitaya, None; J. Takahashi, None; F.J. Van de Velde, None; C.L. Schepens, None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 2480. doi:
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    • Get Citation

      A Yoshida, S Ishiko, N Kitaya, J Takahashi, FJ Van de Velde, CL Schepens; Retinal Sensitivity at the Margin of Macular Holes . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2480.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Abstract: : Purpose: To study the retinal sensitivity at the nasal margin and at the temporal margin of macular holes. Methods: Fourteen eyes of 14 patients with macular hole ( 4 stage 2, 5 stage 3, and 5 stage 4) and 5 healthy control were included in this study. The retinal sensitivity at the nasal and at the temporal margin of the macular hole, and at the nasal side and at the temporal side of the fovea in control eyes were measured using our program based on a PEST strategy with a scanning laser ophthalmoscope. Stimulus size was 10 minarc square. Photopic illuminance (more than 500 td) and low illuminance (less than 5 td) were used for background conditions in each measurement. Retinal sensitivity is expressed as dB attenuation on a logarithmic scale down from a maximum light level in each background condition. Results: No differences in retinal sensitivity between the nasal side and the temporal side of the fovea in control eyes were observed under both background conditions. Under a photopic background illuminance, no differences in retinal sensitivity were observed between the nasal margin and the temporal margin of the macular hole. However, only in stage 3 macular hole, the retinal sensitivity at the temporal margin of the hole (8.4 4.7 dB) was significantly lower than at the nasal margin (10.2 5.3 dB) under a low background illuminance (p<0.05). Conclusion: Differences in retinal sensitivity between the nasal margin and the temporal margin of the hole in stage 3 macular hole might be related to a difference in vitreous traction at each margin of the hole.

Keywords: 461 macular holes • 511 perimetry 
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